←Back to NewsAI News/InfranewsInfraOpen SourcePerplexity's CobbleDB Cuts Search Storage Latency by 82% Over DynamoDBPerplexity rebuilt its search hot store from scratch, cutting batch-read latency 5x and slashing costs 20% versus DynamoDB.SourcePerplexityPublishedSep 15, 2026, 8:16 PMAuthorAlphaSignal NewsroomRead1 min readPerplexity rebuilt its search hot store from scratch, cutting batch-read latency 5x and slashing costs 20% versus DynamoDB.Reporting is indexed from AlphaSignal. Rights remain with the original publisher and cited sources.Read original report ↗Next readsAlphaSignal · repoEdge0 Runs a 35B AI Model on a Mac mini Using SSDCohere · newsCohere's Open-Source Megakernel Beats vLLM by 1.58x on H100vLLM · newsvLLM's Hybrid HiSparse Triples Concurrent Requests on Million-Token Contexts